来自《耶鲁大学开放课程：金融理论 第2集 第2集》

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  you must have bought that difference somewhere.
  你肯定是从别的地方买过来的
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  And if you're consuming less y than you started with
  如果你消费的比你开始时还少的y
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  you must have sold some of that Y in order to end up consuming less.
  为了少消费你肯定卖了一部分Y
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  So the endogenous variables are the prices and the trades.
  因此内生变量是价格和交易
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  Now, how can we make a general theory
  我们怎么从任意数量的人和商品中
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  that for an arbitrary number of people, an arbitrary number of goods,
  得出一个一般化的结论呢
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  you can solve and figure out what's going to happen
  你可以计算并指出发生了什么
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  that looks very much like the example
  这看起来非常像这个例子
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  and has as a special case the example we did to begin with?
  并包含我们开始的例子
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  That's what happened with general equilibrium,
  这就是一般均衡
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  and I'm about to describe it.
  我要来描述它
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  So the next step is always to write down the equilibrium
  下一步都是将以方程式联立的方式